We all know that whales are endangered due to hunting and pollution, but do you know how important they are for the ocean and the environment? This video shows how essential a healthy population of whales is to the ocean ecosystem. Creative Commons Attribution license (reuse allowed). Video was not modified. Please visit sustainablehuman.org for credits and more information.

When wolves were reintroduced to Yellowstone National Park in the United States after being absent nearly 70 years, the most remarkable "trophic cascade" occurred. What is a trophic cascade and how exactly do wolves change rivers? George Monbiot explains the process.

Two swimsuit models discuss the ins and outs of trading off their good looks and their probably unrealistic plans for the future after their assets have gone pear-shaped.

Barbara is a retired French teacher who happens to be Sigrid's sister. The two have a conversation about language in general and about how Barbara became interested in the career path she followed.

Barbara talks about her studies and other experiences that led to her career as a French teacher. Immersion played a crucial role for both sisters in learning new languages.

Barbara talks about the different jobs she had teaching both French and English. Later, she also had a job supervising teachers of foreign languages, though she notes that these are now referred to as "world languages."

Barbara talks about a mistake she made as a language supervisor. Sigrid talks about how people in the U.S. speak English even when they have a very strong accent and it's OK. They both agree that learning with a native speaker of the language is the best way to learn.

Both Sigrid and Barbara like grammar and they talk about some of their pet peeves. The also agree that grammar isn't the most important thing. Using the language to communicate is more important.

Barbara talks about language programs called "dual immersion," student take their various classes in two different languages. She also describes her work as a copy editor.

When you are learning another language, you inevitably make mistakes. It's all part of learning, and can even help you remember how to use certain words, phrases, or grammar correctly. Barbara and Sigrid talk about mistakes they remember and never made again!

Barbara and Sigrid finish up their conversation with some considerations about watching movies in foreign languages. In particular, they speak about the advantages and disadvantages of subtitles and dubbing.

We can use nouns, verbs, or adjectives to describe someone's personality. Sigrid shows us how to describe someone with a strong personality.

Tara’s Recipes: Tara de la Motte takes us in inside her kitchen and shows us how to make a delicious dish of chilli king prawns and couscous. Enjoy!

Watch Tara de la Motte make an amazingly simple and delicious fruit salad!

Tara de la Motte's Florida Salad is not just an ordinary salad. With bright colors and a variety of fruits and vegetables it brings Florida’s tropical beauty right into your home!